Help - should my acer palmatum be in acid soil?

Last autumn I planted a Japaneses maple, Acer Palmatum 'Shaina' in my alkaline soil in a shady spot. The label on the plant from the nursery said it was suitable for all types of soil.

I was just following up on maintenance advice on the Shoot Gardening website, and it says plant in acid soil.

I'm panicking now - do I dig it up and pot it in acid soil? Or will the fact that it's still alive and budding mean it will be okay? Perhaps I should fertilise it with ericaceous compost and hope for the best?

I prefer ericaceous soil but as long as its not too alkaline acers will be fine.
I agree with Blair and rosa about mulching.
Shelter from strong cold winds and hot sunshine are more important considerations.
Dry thin soil is not suitable.
Dont dig up your plant Lindsay